justinm001
Solar Addict
- Joined
- Dec 18, 2022
- Messages
- 1,594
I don't have a shower in my RV yet and plan on adding soon along with a hot water heater. I seem to make quite a bit of excess solar and have seen others use their excess solar to heat their water tanks. The problem is I take showers in the morning so the water would likely need to stay warm all night, which might not be possible.
Space is also a concern as I don't want a huge water tank taking up a lot of my storage. So I'm thinking about using a tankless along with a tank but unsure if the tankless should be before or after the tank or if its even possible to use tankless as I'd like a fancy shower with high GPM. I have one of these laying around I could use but is 30amp and only .68gpm.
Maybe scrap the tankless idea, get a custom 10gal very well insulated tank built and have a 48V 1500w heater element and 2 120v 1500w hot water heater elements installed. Have solar run excess to 48v all the time then shore/inverter heat the other 2 when I turn it on.
I'm unsure how realistically hot water lasts and how long it'll take to heat up. Also unsure if there's other options like hydronic that I should consider. Cost isn't nearly as important as comfort, convenience and optimizing space.
Space is also a concern as I don't want a huge water tank taking up a lot of my storage. So I'm thinking about using a tankless along with a tank but unsure if the tankless should be before or after the tank or if its even possible to use tankless as I'd like a fancy shower with high GPM. I have one of these laying around I could use but is 30amp and only .68gpm.
Rheem Performance 3.5 kW 0.68 GPM Point-Of-Use Tankless Electric Water Heater RETEX-04 - The Home Depot
Get hot water for your home, office or remote space with this Rheem tankless electric water heater. This energy-efficient water heater delivers an endless hot water supply and consistent temperature with
www.homedepot.com
Maybe scrap the tankless idea, get a custom 10gal very well insulated tank built and have a 48V 1500w heater element and 2 120v 1500w hot water heater elements installed. Have solar run excess to 48v all the time then shore/inverter heat the other 2 when I turn it on.
I'm unsure how realistically hot water lasts and how long it'll take to heat up. Also unsure if there's other options like hydronic that I should consider. Cost isn't nearly as important as comfort, convenience and optimizing space.